Apparatus employed in the removal of dust and the like.



W. G. HAY.

APPARATUS EMPLOYED IN THE REMOVAL OF DUST AND THE LIKE.

APPLICATION FILED JUNE 18, 1914.

1,127,242. Patented Feb.2,1915.

siding at 104' Kings road, 7 county ofllancaster, England, have invent- I UNITED STATES rare OFFICE.

WILLIAM GEORGE HAY, F PRESTWICH, ENGLAND.

' APPARATUS EMPLOYED IN THE REMOVAL VOF DUST AND THE LIKE.

Specification of Letters Patent.

Patented Feb. 2, 1915.

' Application filed June 13, 1914. serial No. 845,006.

-z- Be it known that I, -WILLIAM GEORG HAY, a subject of'the Kin of England, re-

restwich, n the ed' new-and'useful Improvements in and Connected with'Apparatus Employed in the Removal ofDustand the like, of which the 1 following is aspecification.

' This invention has reference to apparatus or mea'ns connected with the removal or dealing 'with dust or dirt, or: the hke, such "for instance as systems where dust, or dirt,

dust or di-rt '01- the like is intercepted beor the' like is removed by a vacuumor partial vacuum, created by suitable exhausting or vacuum producing means, and where the -tween its point of entering the apparatus say at an 'intake or suction pipe or nozzle, and the 'air exhausting and movmg means,

by a. filter or screen. And the primary object of this invention is to provide improvementsfinconnection with this kind of dust or the-like removing apparatus, by wh ch the automaticor semi-automatic cleansing of the filter or screen medium, is accomplishedfand the vessel or receiver in connection-with which the'filter or screen 1s used, can be wholly or nearly wholly filled with dust, instead of. being only partly filled, as with present apparatus.

In this apparatus the filter or screen is movable, or has a movablepart, which has connected with it a valve, and this valve operates in connection with the inlet of the 'air pipe'from theinterior or exhausting side of thefilter or screen; and it is so arranged, that Whenthe bag or screen becomes choked or sealed, the air pipe is closed by-the valve-by the degree of partial'vacuum then existing in the screen and remains closed until'a flow of air for cleaning purposes is allowed to enter the p1pe 1n the oppositedirection and which 1s controlled by a separate valve; this pressure causing a movement of the screen or a part of it, so

7 moving the valve as to close the pipe. When the 'system is thus closed, the action in the collecting or intake pipe or nozzle will cease, and thereupon the operator will understand that the screen or bag is Sealed, and the filter requires cleaning-.- i

To clean the ,filter or s'creen,'that is remove adhering dust from its surface, the inlet or entrance nozzle or trunkof the ,-dust and air pipe is closed by placing azcap or the like, on it, or by shutting a tap, so that from it andcarrying with it' the adhering .dust which was choking or sealingit; and this alternate action of creating a vacuum .within the vessel, and then admitting air-to the. interior or behind the screen being repeated several times, the inrushing air will remove the accumulated dust onthe outside, and cleanse it.

Thexinvention is illustrated in the an nexed drawing which showsin section an apparatus comprlslng the improvements.

-l represents generally the' 'dust and air receiver and dust collecting and discharging :vessel, having a hoppershaped bottom portion 2-with a closing door-,3 at its lower end;

and a butter-fly valve -il in the mouth 5; -while at the upper end, there is a removable close fitting'cover 6. "7 is the dust and air'suction or intake con duit, having on .its inner end a branch 8, adapted to'deliver the air and dust tangentially-into the upper part of the recei ver.

1O is'the filter orscreen within the vessel 1; and-ill represents the air exhausting apparatus, which may be assumed to be a steam'jet exhauster. The filter or screen 10 is in the form of a cylindrical bag of suitable textilematerial, having'within it a spiral wire 12 which keeps it extendedaxially, and supports its cylindrical walls ra dial1y.' The lower end of the filter 10 is closed by a conical end plate 13say of thin metal; and the upper end may also be closed by a conical thin metalend 14'; and this upper end portion issecured to a pipe 15 which extends down into the filter, and leads by a port 16 from the upper end of the filter to'the outside of the vessel, and the exhausting apparatus 11 The screen 10 is held at its upper part 14, and is stationary, while below this point, it is movable verti- -cally; and the valve referred to which is moved :by this filterjis, marked 17, and is carried by the lower end 13, and operates in connection with the: lower end of the dependent pipe or conduit 15.

- 18 is the filter cleansing air inlet valve; and 19 isits hand operated rod.

In action, the partial vacuum created by the air exhausting apparatus. acting through the'conduit 16, produces a vacuum in the whole interior of the apparatus-and the pipe 7 being fedwith air and dust in any f ceiver 1; and being, by the inlet branch 8,

,. the filter,

through the walls of the filter 10, which of the apparatus. Normally the filter is directed in a tangential manner into the vesfrom the air, and its fall down the annular ace between'the walls of the receiver of will be promoted. The air passes rids itof any remaining dust particles it contains; and it passes by the pipe 15 out held .or extended vertically, that is longiitudinally, by-this s'piral'wire 12; but when the pipe to and through the valve. when this takes place, the intake action at the vacuum in it rises, due to the collection of dust on its surface, and the closing of axially;

sprlng between'it and the stop 21, on a rod 23, whichfextends down from the top of And the collecting or intake mouth of the device,

v the operator .will know that the screen 10 is connected wlth the pipe 7, will cease, and

choked and requires cleaning. j

, As above stated, he entrance 7 is closed byputtmga cap on the end of the intake nozzle or closing a tap on it, and

thereby a partial vacuum will be created within the whole-apparatus outside the filter; and in this condition, the valve 18 is opened by hand, by operating therod 19, and thereby outside air will rush in, and pass from' within the filter to the annular space outside it in the vessel 1 and so will carry from the filters external surface and pores, the dust adhering to it and-contained init; and if this operation is repeated sev eral times by the closingand opening of the valve 18, the'complete cleansing of the filter will take place.

When the filter is clean, the spring 20 will 'force the valve' 17 away from the pipe' 15, and the filter will be extended to its normal position, as shown in the drawing.

The close fitting door 3, at the neck 5 of the hopper 2-.is held in position bya lever 26, to which it is connected and a hand nut P 27,, screwed on to) the rod 285 and the butterfly valve 4 whose normal position is that shown in the figure," is operated by a. lever 29.

- When the receiver 1 has collected a certain quantity of dust, and it is required to remove it, say into a bag, the door 3 is opened and swung outof the Way, and the thereof is removed.

to the pipe;

bag. fitted over the ne ck '5, and then'the valve 29'1s:turned aroundso asto open the neck, the contents fallfinto the bag.'-

The whole apparatus may besupported sel, the separation of the dust or the like qfof ordealingwith dust K01". dirt; the combiy.

nation'w-ith'a closedve'ssel, ot-afilter within the saidvesselyapart oif-,,the said filter.'movable, a conduit for introducingair intothe;

vessel, a discharging conduit communicate ing with the filter for drawing; the nairi through the filter and thereby exhausting the vessel, a closuremeans'within the discharging conduit connected with andaadapta;

filter, an means for admitting air directly irom the atmosphere into the interior of the filter, whereby the dust on the exterior Walls 2. In a vacuum apparatus for-the removal of or dealing withdust-or dirt, the combination with a closed vessel of a collapsible. filter within the said vessel, means for sup"- porting the filter against radial-pressure, the

said filter being movable axially, an intakeconduit for introducing air and dust. into the vessel, a dischargingconduit in communication with the filter for exhausting the air in thevessel, a closure means in thedischarge conduit connected with and operated by the axial movement of the filter, and means .for introducing air to the interior of 1, the'filter whereby the dust on the exterior walls thereofi-is removed, substantially asdescribed. 1 v, I.

3. In a vacuum apparatus for the removal of or dealing with dust or dirt, thecombination with a closed vessel, of acollapsible filter within the said vessel, resilient means for-supporting the Walls of the filter against radial pressure, the said filter being movable axially, an intake conduit for introducing air and dust into the vessel and outside of the filter, a discharge conduit in communication with the interior of thefilter'for discharging the-air in the vessel, a valve in the discharge conduit connected with and operated-by the axial movement of the filter, and an atmospheric inlet valve for communication with ,the interior of the filter, the parts arranged as and for the purose described.

In testimony'whereof I have signed my "name to this specification in the presence of twosubscribingwitnesses. i

\ WILLIAM GEORGE HAY.

Witnesses SOMERVILLE GoonALL, ROBERT WITTER. 

